JS tests: size=1..20
Ruby tests: size=0...50
Python tests: 1...1000, blowing up the output buffer on failure.

multiplication_table(860,804)

STDERR
Max Buffer Size Reached (1.5 MiB)

please fix

Explain to me please. Why when creating a list in this way: list = [[[None] * 3] * 3] - (result = [[None, None, None], [None, None, None], [None, None, None]]), when changing the list : list[1][1] = 2, I get this result: [[None, 2, None], [None, 2, None], [None, 2, None]]. But if I create a list like this: list2 = [[None, None, None], [None, None, None], [None, None, None]], and edit it: list2[1][1] = 2, then I get this result: [[None, None, None], [None, 2, None], [None, None, None]]. Why am I getting different results? After all, the lists are initially the same ... in Python

Either make the instructions language agnostic or add instructions per language group/conditional comments. See the issue below.